patch applied (ghc): Don't make a "windows" flag in the Cabal file - os(windows) already exists!

[Ian Lynagh]

Mon Aug  4 08:34:30 PDT 2008  Ian Lynagh <igloo at earth.li>
  * Don't make a "windows" flag in the Cabal file - os(windows) already exists!
  Pointed out by Duncan Coutts

    M ./compiler/ghc.cabal -4 +1

View patch online:
http://darcs.haskell.org/ghc/_darcs/patches/20080804153430-3fd76-e4446d89f0867a8a54e13348f7fba5a6f20a18b8.gz